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Neuropeptide

Bombesin

Bombesin is a 14-amino-acid peptide first isolated from amphibian skin that gave its name to a family of mammalian receptors. It is widely used as a research tool in appetite and receptor-biology studies.

By The Peptides Codex Editorial TeamReviewed July 10, 2026
Length
14 aa
Class
Neuropeptide
Function
Appetite and gastrin-release signaling (research)
Context
Neuroscience and receptor-imaging research

Amphibian peptide that defined the bombesin receptor family.

Part of the Neuropeptides & signaling cluster

Overview

Bombesin is a 14-amino-acid peptide first isolated from amphibian skin that gave its name to a family of mammalian receptors. It is widely used as a research tool in appetite and receptor-biology studies.

Source & context

Biological / chemical source: Originally isolated from frog (Bombina) skin

Primary research or clinical context: Neuroscience and receptor-imaging research

Receptor family it defined

Bombesin is the prototype for a receptor class whose mammalian members include the gastrin-releasing peptide receptor. Because these receptors are studied in tumor imaging, bombesin analogs appear frequently in radiopharmaceutical research literature.

Research-tool status

Bombesin is chiefly used as an experimental probe rather than a therapeutic. This page presents its receptor pharmacology for education and does not describe any human use.

Sequence

One-letter sequence commonly cited for Bombesin (educational; isoforms and modifications may differ):

EQRLGNQWAVGHLM

EQRLGNQWAVGHLM

E1Q2R3L4G5N6Q7W8A9V10G11H12L13M14
Helical wheel projection

Residues plotted ~100° apart around an α-helix — clustering of one color reveals an amphipathic face.

Analyze sequences in the playground →

FAQ about Bombesin

What is Bombesin?+

Bombesin is a 14-amino-acid peptide first isolated from amphibian skin that gave its name to a family of mammalian receptors. It is widely used as a research tool in appetite and receptor-biology studies.

Is Bombesin an approved medicine?+

Bombesin is discussed here as a research / educational topic. Neuroscience and receptor-imaging research. This is not medical advice.

What is the typical length of Bombesin?+

Bombesin is commonly described as approximately 14 amino acids (Neuropeptide).

Related peptides

References & further reading

  1. 1.Wikipedia — Bombesin
  2. 2.PubChem — compound summary for Bombesin (CID 16201612)
Disclaimer: Educational content only. Not medical advice. Not instructions for human use. Research peptides and unapproved products may be restricted or illegal to market for human consumption in your jurisdiction. Consult qualified professionals and applicable law.
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Cite this: Peptides Codex — Bombesin educational profile.
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